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Finding the Fourth Proportional to 280,692.04, 387,357.74 and 153,367.63

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Solution

The fourth proportional to 280,692.04, 387,357.74 and 153,367.63 is: 211,648.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,692.04 : 387,357.74 = 153,367.63 : x
  2. Step 2: Convert to fraction form
    280,692.04/387,357.74 = 153,367.63/x
  3. Step 3: Cross multiply
    280,692.04x = 387,357.74 × 153,367.63
  4. Step 4: Simplify right side
    280,692.04x = 59,408,138,545.96
  5. Step 5: Solve for x
    x = 59,408,138,545.96/280,692.04
  6. Step 6: Final answer
    x = 211,648.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.